From patchwork Thu Jun 17 19:41:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Moon X-Patchwork-Id: 12329419 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2C80C2B9F4 for ; Thu, 17 Jun 2021 19:44:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 75D52613D5 for ; Thu, 17 Jun 2021 19:44:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 75D52613D5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=nhy4EJBQIGpFK38FmE0uMd/hbjJGXXykRy7s/IelYWk=; b=rcWLiNt6It+YQF Zk9ZtK5S/85HDZ6AYuFZbgAe0jXGOORtOd8jzXLEW1Bell/9rb9aSYTj/zUeuzFLotm+I/mG711pg DE2FRw0Oy89wv2OfM9K5kvz5rVCZrjmzafoHhKqV2dHx+3XEz/ZWMvD6/A9p2wIaM8zdp454EsO22 SHw2BgzMF0PiDIvRI9wGtLB59VAMciUdZgZa0O4EtLXBSe5axOtm1nuPAvMFellJXB3MAY8Ckmq/H ygmrTZ6PlegZiIOy35acPS8sQ9pj+YYzXULPQe3j7U5L5hc2yIWq0UAPVR2xjxVezUNiAwFJseH9/ tzj+yKKs/4PFmQ5/VaqQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ltxwY-00Bb5m-QY; Thu, 17 Jun 2021 19:44:50 +0000 Received: from mail-pf1-x42f.google.com ([2607:f8b0:4864:20::42f]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ltxw2-00Ban2-6V; Thu, 17 Jun 2021 19:44:19 +0000 Received: by mail-pf1-x42f.google.com with SMTP id a127so5833203pfa.10; Thu, 17 Jun 2021 12:44:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=083k0zv8Ytg086lmX8X+TtAKRzXKvvth7IVx9plMtXg=; b=iuajfJilA0fwo4o/4oh4VDEAW6K9CA+mAVG1N73pVcpReCbdShNd7WB85LybfZQHjB Xby86N2VkOHbLyYxQhP0vKv//8KimP7qM2RAnzNuEewy84WGVtavZPyAfT0PMEevO3kh YaCKWXcZGDrqVekkPU+9J9+1Ei4tLb74yW5VYooD8DsMYNcE8WIgtr31HhazXJFoAoJ/ hQs+rCZgYmqhhuNKGE8q7CaRprAt6+6XzW/O5CC6BAL4huoAdKKyxewif5XV+9HJ0lxb 0lQhHy7HhGKhmK/hs8qUlRhJcBWJYce1ZjdCFMBc6WrmHw3Y9np3Oja+5GynM0VhzNmB bwOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=083k0zv8Ytg086lmX8X+TtAKRzXKvvth7IVx9plMtXg=; b=rJj+VNW3Mgm8vxqBYJfB9Kue4TvEe23gitl4inXXhsmZ+nDINvzFovMNHYISS8irCr 7DIwKBN7qtwZwxM0TXNFhi8+xEOv6Td5GFYFy5r3rgPYuM5HlvGFV4ibOLU4y+16zOod sve6KrEwRpX53J8rwEi41Y01JGo1KQUNbqLOqSmcgWFTVmqWQtIaHTycxtnhuaY2u59Z wz6SeYEZ3knu+4mHKngU3qc1KwAfSNoPes2awyVIIdNFNyZhT51tk9/asfBSYMhMfpc5 ACNC5dKABDt0v+DZQJLWd0xWne4DazMhqc/cmpUgyhp1ThgBD9j1/2Cfuk9FHVJUZsYl lN5w== X-Gm-Message-State: AOAM530pemsywRaKRBSZTeg2iVBt6uMx02Bf/fnXyddnqD7Y+T9OC6cv 4Nsv3Nsm9d20daslHKCgc7w49VBKxls= X-Google-Smtp-Source: ABdhPJxt9c7UvvRETV6duPF5gupqd/aXsSexrgfUjLHqotY9ZIoS1gjWqBegyutCZwZkYOgqDB/Dmw== X-Received: by 2002:a65:4242:: with SMTP id d2mr6293256pgq.243.1623959056538; Thu, 17 Jun 2021 12:44:16 -0700 (PDT) Received: from archl-c2lm.. ([103.51.75.27]) by smtp.gmail.com with ESMTPSA id z9sm5987187pfa.2.2021.06.17.12.44.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Jun 2021 12:44:16 -0700 (PDT) From: Anand Moon To: --to=linux-phy@lists.infradead.org, --to=linux-arm-kernel@lists.infradead.org, --to=linux-amlogic@lists.infradead.org, --to=linux-kernel@vger.kernel.org Cc: Anand Moon , Martin Blumenstingl , Kishon Vijay Abraham I , Vinod Koul , Neil Armstrong , Kevin Hilman , Jerome Brunet , Philipp Zabel , linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFCv1 6/8] phy: amlogic: meson8b-usb2: Use phy reset callback function Date: Thu, 17 Jun 2021 19:41:41 +0000 Message-Id: <20210617194154.2397-7-linux.amoon@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210617194154.2397-1-linux.amoon@gmail.com> References: <20210617194154.2397-1-linux.amoon@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210617_124418_354295_692F8B70 X-CRM114-Status: GOOD ( 15.29 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Reoder the code for phy reset mode in .reset callback function. Reset control is shared between two phy so use the phy name as shared id. Cc: Martin Blumenstingl Signed-off-by: Anand Moon --- drivers/phy/amlogic/phy-meson8b-usb2.c | 35 ++++++++++++++++++-------- 1 file changed, 25 insertions(+), 10 deletions(-) diff --git a/drivers/phy/amlogic/phy-meson8b-usb2.c b/drivers/phy/amlogic/phy-meson8b-usb2.c index ab23a584d7b7..c1ed2e5c80d8 100644 --- a/drivers/phy/amlogic/phy-meson8b-usb2.c +++ b/drivers/phy/amlogic/phy-meson8b-usb2.c @@ -133,6 +133,7 @@ struct phy_meson8b_usb2_priv { struct clk_bulk_data *clks; struct reset_control *reset; const struct phy_meson8b_usb2_match_data *match; + int is_enabled; }; static const struct regmap_config phy_meson8b_usb2_regmap_conf = { @@ -147,14 +148,6 @@ static int phy_meson8b_usb2_init(struct phy *phy) struct phy_meson8b_usb2_priv *priv = phy_get_drvdata(phy); int ret; - if (!IS_ERR_OR_NULL(priv->reset)) { - ret = reset_control_reset(priv->reset); - if (ret) { - dev_err(&phy->dev, "Failed to trigger USB reset\n"); - return ret; - } - } - ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks); if (ret) { dev_err(&phy->dev, "Failed to enable USB clock\n"); @@ -173,6 +166,22 @@ static int phy_meson8b_usb2_exit(struct phy *phy) return 0; } +static int phy_meson8b_usb2_reset(struct phy *phy) +{ + struct phy_meson8b_usb2_priv *priv = phy_get_drvdata(phy); + int ret; + + if (priv->is_enabled) { + ret = reset_control_reset(priv->reset); + if (ret) { + dev_err(&phy->dev, "Failed to trigger USB reset\n"); + return ret; + } + } + + return 0; +} + static int phy_meson8b_usb2_setmode(struct phy *phy, enum phy_mode mode, int submode) { @@ -200,6 +209,8 @@ static int phy_meson8b_usb2_setmode(struct phy *phy, enum phy_mode mode, return -EINVAL; } + phy_meson8b_usb2_reset(phy); + priv->dr_mode = mode; return 0; @@ -209,6 +220,8 @@ static int phy_meson8b_usb2_power_off(struct phy *phy) { struct phy_meson8b_usb2_priv *priv = phy_get_drvdata(phy); + priv->is_enabled = 0; + if (priv->dr_mode == USB_DR_MODE_HOST) regmap_update_bits(priv->regmap, REG_DBG_UART, REG_DBG_UART_SET_IDDQ, @@ -221,6 +234,8 @@ static int phy_meson8b_usb2_power_on(struct phy *phy) struct phy_meson8b_usb2_priv *priv = phy_get_drvdata(phy); int ret; + priv->is_enabled = 1; + regmap_update_bits(priv->regmap, REG_CONFIG, REG_CONFIG_CLK_32k_ALTSEL, REG_CONFIG_CLK_32k_ALTSEL); @@ -229,7 +244,6 @@ static int phy_meson8b_usb2_power_on(struct phy *phy) regmap_update_bits(priv->regmap, REG_CTRL, REG_CTRL_FSEL_MASK, 0x5 << REG_CTRL_FSEL_SHIFT); - /* reset the PHY */ regmap_update_bits(priv->regmap, REG_CTRL, REG_CTRL_POWER_ON_RESET, REG_CTRL_POWER_ON_RESET); @@ -257,6 +271,7 @@ static const struct phy_ops phy_meson8b_usb2_ops = { .power_on = phy_meson8b_usb2_power_on, .power_off = phy_meson8b_usb2_power_off, .set_mode = phy_meson8b_usb2_setmode, + .reset = phy_meson8b_usb2_reset, .owner = THIS_MODULE, }; @@ -301,7 +316,7 @@ static int phy_meson8b_usb2_probe(struct platform_device *pdev) if (ret) return ret; - priv->reset = devm_reset_control_get_optional_shared(&pdev->dev, NULL); + priv->reset = devm_reset_control_get_optional_shared(&pdev->dev, "phy"); if (PTR_ERR(priv->reset) == -EPROBE_DEFER) return PTR_ERR(priv->reset);